Allow phpstan 2 - phpstan/phpstan:^1.12 || ^2.0

Author: sasezaki

composer.json

@@ -8,7 +8,7 @@
     ],
     "require": {
         "php": "^7.2.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
-        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan": "^1.12 || ^2.0",
         "struggle-for-php/sfp-stubs-psr-log": "^1.0.1 || ^2 || ^3.0.1"
     },
     "require-dev": {